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    • 5. 发明申请
    • Compositions, methods, and kits for assaying complement activation
    • 用于测定补体激活的组合物,方法和试剂盒
    • US20080305504A1
    • 2008-12-11
    • US11811425
    • 2007-06-08
    • Liming YuAnup SoodMark Felipe Baptista
    • Liming YuAnup SoodMark Felipe Baptista
    • C12N9/00G01N33/53
    • C07K14/472C12Q1/37G01N2333/96441
    • The present invention provides a fluorogenic composition for assaying complement activation that comprises a substrate for C3 convertase that is linked to a first fluorophore and a second fluorophore, wherein the fluorescence of the first and second fluorophores are mutually substantially quenched when the two fluorophores are present at a distance less than the characteristic distance for the two fluorophores. In one embodiment, the fluorescence of the first fluorophore is substantially quenched by the second fluorophore, and the second fluorophore emits heat upon quenching. The present invention also provides a method for assaying complement activation, wherein the method includes the steps of incubating a biological sample with a polymer to provide a polymeric biological sample, followed by incubating the polymeric biological sample with the fluorogenic composition, and measuring the fluorescence. The method may optionally include the step of measuring the optical properties of the biological sample prior to the incubation steps. The present invention further provides a kit for assaying complement activation that comprises the fluorogenic composition disclosed herein.
    • 本发明提供了用于测定补体活化的荧光组合物,其包含与第一荧光团和第二荧光团连接的C3转化酶底物,其中当两个荧光团存在于第一荧光团和第二荧光团时,第一和第二荧光团的荧光相互基本上骤冷 距离小于两个荧光团的特征距离。 在一个实施方案中,第一荧光团的荧光基本上被第二荧光团猝灭,第二荧光团在淬火时发出热。 本发明还提供了用于测定补体活化的方法,其中该方法包括以下步骤:用聚合物孵育生物样品以提供聚合生物样品,随后将聚合物生物样品与荧光组合物一起温育,并测量荧光。 该方法可以可选地包括在孵育步骤之前测量生物样品的光学性质的步骤。 本发明还提供了用于测定补体活化的试剂盒,其包含本文公开的荧光组合物。